
const {msgSuccess, msgError} =useModal()
function copyTextToClipboard(input, { target = document.body } = {}) {
  const element = document.createElement('textarea');
  const previouslyFocusedElement = document.activeElement;

  element.value = input;

  // Prevent keyboard from showing on mobile
  element.setAttribute('readonly', '');

  element.style.contain = 'strict';
  element.style.position = 'absolute';
  element.style.left = '-9999px';
  element.style.fontSize = '12pt'; // Prevent zooming on iOS

  const selection = document.getSelection();
  const originalRange = selection.rangeCount > 0 && selection.getRangeAt(0);

  target.append(element);
  element.select();

  // Explicit selection workaround for iOS
  element.selectionStart = 0;
  element.selectionEnd = input.length;

  let isSuccess = false;
  try {
    isSuccess = document.execCommand('copy');
  } catch { }

  element.remove();

  if (originalRange) {
    selection.removeAllRanges();
    selection.addRange(originalRange);
  }

  // Get the focus back on the previously focused element, if any
  if (previouslyFocusedElement) {
    previouslyFocusedElement.focus();
  }

  return isSuccess;
}

export default {
  mounted(el, binding) {
    const { value } = binding;
    if (value) {
      el.copyValue = value;
      // 获取指令参数 默认双击666
      const arg = binding?.arg ?? "dblclick";
      // 在已挂载时使用 addEventListener 进行注册，并在未挂载时自动删除EventListener
      useEventListener(el, arg, () => {
        const success = copyTextToClipboard(el.copyValue);
        success
                ? msgSuccess("复制成功")
                : msgError("复制失败");
      });
    } else {
      throw new Error(
              '[Directive: copy]: need value! Like v-copy="modelValue"'
      );
    }
  },
  updated(el, binding) {
    el.copyValue = binding.value;
  }
}
